Derrick-swinger.



No. 836,622. PATENTED NOV. 20, 1906.

G. P. WERN. v

DERRICK SWINGER.

APPLICATION FILED AUG. 29, 1905.

2 SHEETSSHEET 1) WITNESSES: l/Wf/VTOR ATTORNEY Tn: mmnls PETER: 50., wnsnmaruu. D. c.

No. 836,622. PATENTED NOV. 20, 1906. G. P. WBRN.

DERRICK SWINGER.

APPLIGATION FILED 11116.29, 1905.

2 SHEETS-SHEET 2.

WITNESSES: INVENTOR I ATTORNEY UNITED STATES GUSTAF P. WERN, OF NEW YORK, N. Y., ASSlGrNOR TO RAWSON & MORRISON MANUFACTURING COMPANY, OF (JAMBRIDGEPORT, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

PATENT OFFICE.

DERRICK-SWINGER.

Specification of Letters Patent.

Patented Nov. 20, 1906.

Application filed August 29, 1905. Serial No. 276,223.

To (1 7 7 whom it may concern:

Beit known that I, GUSTAF P. WERN, a citizen of the United States, residing at New York city, in the county and State of New York, have invented certain new and useful Improvements in Derrick-Swingers, of which the following, takenin connection with the accompanying drawings, is a full, clear, and exact specification.

My present invention has relation to that class of devices or machines intended for use in swinging derricks or booms and ordinarily known as derrick-swingers or boomswingers. These machines are usually employed in addition to hoistingdrums or hoisting apparatus for the purpose of swinging the derrick or boom and its load, the raising or lowering of the load being accomplished by the hoisting apparatus.

The object of my invention is to provide or produce a simple, chea and effective form of derrick-swinger whic may be located at any desired position in respect to the hoisting-machine, on the same bed or skids, if desired, or independently thereof, and arranged to be driven by a flexible connection with the shaft of one of the drums of the hoisting apparatus as, for instance, by an endlesschain connection between the two.

To accomplish all of the foregoing objects and to secure other and further advantages in the matters of construction, application, operation, and use, my improvements involve certain new and useful arrangements or combinations of parts and particular features of construction, as will be herein first fully described and then pointed out in the claims.

In the accompanying drawings, forming part of this s ecification,.Figure 1 is a plan or top view s owing my improved derrickswinger in position for use in connection with and arranged to be driven from the shaft of one of the drums of a hoisting apparatus. Fig. 2 is a side View corresponding with Fig. 1, but showing the swinger mounted upon the same platform or skids as the hoisting apparatus. Fig. 3 is a sectional elevation on a plane through line 3 3 of Fig. 1 looking in the direction of the contiguous arrow and on a larger scale, showing the manner of driving the winches or drums for the swinging rope or cable.

In all the figures like letters of reference as to turn upon the shaft A and so as to be compelled to turn therewith when required. The connection of drums D and E with shaftA is accomplished by means of planetary wheels and gears, one set for each winch or drum, and these gears are thrown into or out of action alternately, as will be hereinafter explained.

The planetary gearing is represented in Fig. 3, wherein the planetary wheel a, formed on the interior of the winch, engages the two 7 gears or pinions b and c, the latter being extended within the winch or drum upon suitable studs d and e, of ample strength and durability, applied on the interior of the friction band-wheel a. The gears or pinions b and c intermesh with a pinion f, keyed upon the shaft A. Friction-bands, as F and G, are applied in connection with the frictionband wheels and arranged to operate alternately, being connected with a shaft, as H, movable by means of a hand-lever I, operating in connection with a suitable quadrant, as K. The arrangement of the parts is preferably such that when the lever I is in a vertical position the bands F and G are loosened and the winches or drums D and E are therefore free to turn independently of the shaft A. By shifting the hand-lever I in either direction from the vertical one of the frictionbands is tightened and the other further loosened, thereby compelling one of the drums or winches to turn with the shaft A and allowing the other to be moved in the opposite direction by the rope or cable which may be wound thereon.

L represents one of the drums of any of the usual forms of hoisting apparatus, the same being mounted on a drum-shaft M.

It is from one of the drum-shafts of the hoisting apparatus that I obtain the power for driving the derrick-swinger, and I preferably obtain this power from the shaft of the lower drum of the hoisting apparatus. Upon this shaft I secure a suitable driving-wheel,

which under the arrangement shown in the drawings is in the form' of a sprocket-wheel or chain-wheel, the teeth of which are represented at g g, and on the shaft A, I secure a corresponding wheel, of which the teeth are represented at h h. These two wheels may be varied in construction according to the means employed for connecting them.

The two driving-wheels are connected by a flexible medium, preferably in the form of an endless chain with rollers, asN; but instead of the chain any other suitable flexible means of connecting the two wheels may be empl iyedas, for instance, a rope or cable or By use of the chain or other flexible connection between the two driving-wheels I am enabled to place the derrick-swinger at any convenient point with respect to the hoisting apparatus and without interfering with the latter. It may, if convenient, be mounted upon the same skids O as the hoisting apparatus, but not necessarily so. It may be placed at any convenient distance from the oisting apparatus and independently thereof, upon the same or a different level, and by use of the flexible connection I obviate the necessity of the derrick-swinger being accurately alined with respect to the hoisting apparatus, as would be required with any rigid form of connecting means. The device may therefore be set up and made ready to operate by unskilled mechanics, which is an important advantage in the use of this class of devices. Being separate and independent of the hoisting apparatus, the use of the latter independently of the swinger is in no manner interfered with, and the addition of the driving-wheel adds very little to the cost of construction of the hoisting apparatus and. practically nothing to its size.

When the derrick-swinger is in place and the flexible connection applied, the shaft A will be caused to rotate in unison with the shaft M, and the winches for the swinging rope or cable may be caused to move in either direction or allowed to remain immovable by suitably adjusting the hand-lever I.

The improved device is easily and cheaply constructed and admirably answers all the purposes or objects of the invention herein alluded to.

Having now fully described my invention,

what I claim as new herein, and desire to secure by Letters Patent, is

1. In a derrick-swinger, the combination with the shaft-thereof, of a driving-wheel secured on said shaft and a flexible connection between the said driving-wheel and the shaft from which the driving power is derived, the

- two shafts being arranged to turn together substantially as set forth.

2. In a derrick-swinger, the combination vwith the shaft, thereof, of a driving-wheel secured on said shaft, a flexible connection between said driving-wheel and the shaft from which the driving power is derived, and means for alternately clutching the winchdrums with the shaft of the derrick-swinger, the winch-drums being loosely mounted on said shaft, substantially as set forth.

3. The combination with a hoisting apparatus, of a derrick-swinger, a driving-wheel secured upon the shaft of one of the hoistingdrums, a corresponding wheel a plied directly upon the shaft of the derric -swinger,

; and an endless flexible connection between the two wheels, substantially as and for the purposes set forth.

4. The combination with a hoisting apparatus, of a derrick-swinger having drums movably mounted upon its shaft, a chainwheel applied upon the shaft of one of thehoisting drums, a chain-wheel secured directly upon the shaft of the derrick-swinger, and an endless chain connecting the two chain-wheels, substantially as and for the v purposes set forth.

5. The herein-described derrick-swinger comprising a shaft, two winches or drums movably mounted on said shaft, means for alternately coupling the said drums with the I shaft, and means for flexibly connecting the said shaft directly with the source of driving power therefor, the said derrick-swinger being arranged to be mounted in place for operation, substantially as and for the purposes I set forth.

' two subscribing witnesses.

GUST. P. WERN.

Witnesses O. SEDGwroK, ERNST LUNDGREN. 

